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silverlight listbox 多列图片效果 -凯发ag旗舰厅登录网址下载

发布时间：2025/1/21 编程问答 11 豆豆

凯发ag旗舰厅登录网址下载收集整理的这篇文章主要介绍了小编觉得挺不错的,现在分享给大家,帮大家做个参考.

这个功能之前用wpf写过一次这次用silverlight写一次

这两种写法上基本上没有太大的差别

这个demo并不完美，只是给大家提供一个思路

源码：silverlightlistpricture.rar

看一下效果

思路是：

修改itemtemplate样式

itemspaneltemplate 用wrappanel显示

先为image绑定图片添加一个转换类

using system; using system.io; using system.net; using system.windows; using system.windows.controls; using system.windows.data; using system.windows.documents; using system.windows.ink; using system.windows.input; using system.windows.media; using system.windows.media.animation; using system.windows.media.imaging; using system.windows.shapes;namespace silverlightlistpricture {public class converttorecipesimageinfo : ivalueconverter{public object convert(object value, type targettype, object parameter, system.globalization.cultureinfo culture){stream _stream = value as stream;bitmapimage bitmap = new bitmapimage();bitmap.setsource(_stream);return bitmap;}public object convertback(object value, type targettype, object parameter, system.globalization.cultureinfo culture){throw new notimplementedexception();}} }

我先把前端代码分解一下最后给出全部代码
先看一下是怎么修改listbox的itemtemplate

是用一个image和一个*button做删除

"itemtemplate">"200" height="210" >"1" borderbrush="steelblue" cornerradius="3">"0">"185">"0" source="{binding path=streamsinfo,converter={staticresource imageconverter}}" margin="0" >"1" horizontalalignment="right" >

button的样式

listbox用的时候要把它的itemspaneltemplate改用wrappanel

重要的是scrollviewer.horizontalscrollbarvisibility是定要为disabled这样就能防止wrappanel横向滚动条出现

"0" margin="5" width="640" name="lspricture" scrollviewer.verticalscrollbarvisibility="visible" scrollviewer.horizontalscrollbarvisibility="disabled"itemtemplate="{staticresource itemtemplate}">"auto" background="#f3ffff" >

完整的前台代码

"silverlightlistpricture.listboxprictuedemo"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"mc:ignorable="d"xmlns:convertimage="clr-namespace:silverlightlistpricture"xmlns:tools="clr-namespace:system.windows.controls;assembly=system.windows.controls.toolkit">"imageconverter"/>"itemtemplate">"200" height="210" >"1" borderbrush="steelblue" cornerradius="3">"0">"185">"0" source="{binding path=streamsinfo,converter={staticresource imageconverter}}" margin="0" >"1" horizontalalignment="right" >"layoutroot" background="white">"600">"73">"0" margin="5" width="640" name="lspricture" scrollviewer.verticalscrollbarvisibility="visible" scrollviewer.horizontalscrollbarvisibility="disabled"itemtemplate="{staticresource itemtemplate}">"auto" background="#f3ffff" >"1" verticalalignment="center" horizontalalignment="center" orientation="horizontal">

后台代码

using system; using system.collections.generic; using system.collections.objectmodel; using system.io; using system.linq; using system.net; using system.windows; using system.windows.controls; using system.windows.documents; using system.windows.input; using system.windows.media; using system.windows.media.animation; using system.windows.shapes;namespace silverlightlistpricture {public partial class listboxprictuedemo : usercontrol{observablecollection sourcecollection = new observablecollection();public listboxprictuedemo(){initializecomponent();bindsource();}//删除public void del_prictureevent(object sender, routedeventargs e){}void bindsource(){lspricture.itemssource = sourcecollection;}public void btn_addevent(object sender, routedeventargs e){openfiledialog openfiledialog = new openfiledialog();openfiledialog.filter = "图片文件(*.jpg,*.png,*.bmp)|*.jpg;*.png;*.bmp|all files (*.*)|*.*";if (openfiledialog.showdialog() == true){fileinfo file = openfiledialog.file;stream stream = file.openread();sourcecollection.add(new imageinfo { streamsinfo = stream, activepricture = "tag" });}}}public class imageinfo{public string activepricture{get;set;}public stream streamsinfo{get;set;}} }

好了就说到这

源码：silverlightlistpricture.rar

总结

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